American spy who led ring passing Soviets information for 17 years during Cold War dies in prison
http://www.independent.co.uk/news/world/americas/american-spy-who-led-ring-passing-soviets-information-for-17-years-during-cold-war-dies-in-prison-9701184.html
John Walker, a retired Navy Warrant Officer, died on Thursday at the Federal Medical Centre, a prison hospital, in North Carolina aged 77. His cause of death…